Figure 16.1 block diagram of a/d converter – Renesas H8S/2111B User Manual
Page 448

Rev. 1.00, 05/04, page 414 of 544
A block diagram of the A/D converter is shown in figure 16.1.
Module data bus
Control circuit
Internal data bus
10-bit D/A
Comparator
+
Sample-and-hold
circuit
φ
/16
ADI interrupt signal
A
D
C
S
R
A
D
C
R
A
D
D
R
D
A
D
D
R
C
A
D
D
R
B
A
D
D
R
A
Successive approximations
register
[Legend]
ADCR:
A/D control register
ADCSR: A/D control/status register
ADDRA: A/D data register A
ADDRB: A/D data register B
ADDRC: A/D data register C
ADDRD: A/D data register D
ADTRG
Conversion start trigger from 8-bit timer
φ
/8
AV
CC
AV
SS
AV
ref
Multiplexer
Bus interface
AN0
AN1
AN2
AN3
AN4
AN5
Figure 16.1 Block Diagram of A/D Converter
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